Put forward awkward truths (6)
I believe the answer is:
thrust
'put forward' is the definition.
'awkward truths' is the wordplay.
'awkward' indicates an anagram.
'truths' with letters rearranged gives 'THRUST'.
(Other definitions for thrust that I've seen before include "Push forward as with sword or spear" , "force in argument" , "Lunge forward" , "Shove forward" , "Driving force" .)